aFe's high performance, high flow OE air filter replaces the restrictive factory paper filters and lets your engine breathe better.  Paper filters do a good job in keeping dirt out but can clogged easily so that they need to be replaced frequently.  Foam filters also clog easily.  A washable/reusable, cotton gauze filter like ours allows more airflow and is washable and reusable.  Try a simple test.  Put a sheet of tissue paper up to your mouth and draw air through it.  Now put a sheet of cotton gauze and see the difference.  What happened to the tissue paper when you got it wet? What happened to the gauze?  Our filters are like that.

Our filters are built to let the engine breathe better even as the filter gets dirty.  The multiple layers of cotton gauze are sandwiched between two layers of epoxy coated aluminum screen and pleated like a lamp shade.  Have you ever looked at cotton gauze under a microscope?  It has tiny micro fibers branching out from the strands. When the gauze is oiled like our filters are, these strands attract dirt and dust particles.  One or two layers would allow dirt and dust particles to pass through, therefore we stack multiple layers with progressively tighter mesh to catch progressively smaller and smaller particles, as small as 2 microns in size.  The aluminum screen holds the layers in place and protects the cotton gauze..